if you have a newer AQ750L the dialer is not offered to the best of my memory. Some machines did have the option but most people install the lan card and setup the network so the user can look at the machine via internet. I have seen one company use the pinouts for the Lightbar option to setup there own dialer using a plc. Are you just wanting to know when the machine goes down or want an option to have the machine recover to the next part? If you want the option to recover and go to another part look at the M code M03. This code along with the proper parameter setting will do the latter without the need of a dialer.